Charles e



0. R. NELSON.

BDX PASTENER.

(H9 Model.)

Pgtented July 7, 1885.

- WITPIESSES; A nrvsmom BY m ATTORNEYS.

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rams iln'irn CHARLES R. NELSGN, OF NEW YORK, N. Y.

BOX-=FASTEhiER.v

SPECIFICATIQN farming part of Letters Patent No. 321,628, dated July .7,1885.

Application filed September 15, 1884.

To aZZ whom it may concern:

Be it known that 1, CHARLES R. NnLsoN, of the city, county, and State ofNew York, haveinvented a new and Improved Box-Fast ener, of which thefollowing is a full, clear, and exact description.

The object of my invention is to provide a new and improved device forfasten ng and securing covers on boxes, which device permits offastening or unfastcning the covers very rapidly.

The invention consists in the construction and arrangement of parts, aswill be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a perspective view of the boy fastener. Fig. 2 is a verticalcross-sectional view of the same. n

On each end of the cover A a saddle, B, is secured on the upper surface,which saddle is provided on its upper surface with two transverseridgcs, between which the upper bent end, G, of a clamp-plate, O, can bepassed, the said clamp-plate being provided in its lower end with anaperture, F, for receiving a tubularinternally-screw-threadedprojection, I), on a plate, E, secured transversely on the outer surfaceof the corresponding end of a box.

The clamp-plate C is widened at the lower end or provided withlaterally-projecting lugs G, which are adapted to catch on lugs I, pro

5 jecting from the outer face of the plate E.

These lugs I, in connection with the transverse ridges on saddle B,prevent any lateral movement whatever of the clamp-plate when said plateis in its locked position.

The clampplate O is provided with ribs H on the inner surface along theside edges, which ridges are to rest against the outer surface of thatend of the box to which the plate E is secured. The plate E is notmortised, but is placed against the outer surface of the end of the boxand held on it by screws. The tubular screw-threaded projection D on theplate E takes all strain from the screw L, and the vertical strain onthe said projection D is relieved by the lugs I, which receive throughthe lugs G of the clamp a portion of the strain. Bibs m are formed onthe outer surface of the (X0 model.)

plate C. These ribs m are for the purpose of imparting additionalstrength to the clampbar 6 atits perforated end, where, of course, it isweakest:

The ribs H are provided with offsets h at the lower ends, which offsetsrest against the upper edge of the plate E.

When the plate G is not provided with ribs H, the said plate must beprovided with the offset h. The purpose of providing the'offset is tohave the upper part of the inner surface of the plate 0 or of the ribs Hflush with the inner surface of the plate E.

The aperture E is flared toward the inner end to permit swinging downthe clamp-plate 0 parallel with the end of the box when the cover is tobe removed. A screw, I), having a head, L, is screwed into the tubularprojection D.

To fasten the box the plate (J is swung up and moved toward the end ofthe cover until the part 0 rests upon the saddle B, and then the screw Lis drawn up tightly.

I am aware that a saddle having transverse ribs has been placed on theupper surface of the end of a box-top, and that a clampingplate wassecured to a mortised attachingplate on the end of the body of the bOXby a long peculiarly-formed screw. The upper end of the clampingplatcwas bent so as to rest between the transverse ridges of the saddle whenin alocked position. I do not claim any such construction as of myinvention.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. In a box-fastener, the combination, with aclampplate having an aperture in one end, of a plate adapted to besecured on the box, and provided with an internallythreaded tubularprojection, which is passed through the aperture in the clamp-plate, anda screw for holding the clamp-plate on the tubular projection,substantially as herein set forth.

2. The combination, with a clamp-plate having an offset, it, and anaperture at its lower end, of the plate E, having lugs I, on which lugson the clamp-plate can catch, and a screw passing through the aperturein the clamp into the plate E, substantially as herein shown anddescribed.

3. The combination, with the saddle B, hav- ICO ing transverse ridges,of the plate E, having an internally-threaded projection, D, and lugs I,the angular clamp-plate 0, formed with the aperture F, and lugs G onopposite sides thereof, and the screw L, for clamping the parts inplace, whereby when said parts are in place on a box all lateralmovement will be prevented by the lugs I and ridges on the saddle, andthe strain be equally distributed between them, substantially as setforth.

4. In a box-fastener of the character described, the clamp-plate 0,having an aperture, F, and the ridges m on opposite sides of theaperture for imparting additional strength to said perforated part,substantially as set forth.

CHARLES R. NELSON.

Witnesses:

OSCAR F. GUNZ, EDGAR TATE.

